液滴撞击有机玻璃固壁的实验和数值研究  

Experiments and Numerical Simulations of Droplet Impacting on PMMA Solid Surface

作　　者：李长宁[1,2] 夏振炎[1,2] 李建军[1,2] 伊吉明 

机构地区：[1]天津大学力学系,天津300072 [2]天津市现代工程力学重点实验室,天津300072 [3]天津大学内燃机国家重点实验室,天津300072

出　　处：《工程塑料应用》2014年第3期39-43,共5页Engineering Plastics Application

基　　金：国家自然科学基金项目(11372219;11172205;51176136)

摘　　要：通过实验和数值模拟相结合的方法,探究了液滴撞击有机玻璃固壁的运动过程以及铺展和振荡规律。数值模拟提出了新的分段式动态接触角(SDCA)模型,模拟结果与实验结果吻合良好。研究结果表明,有机玻璃壁面受到液滴撞击时最大压力出现在气液固三相交界线上。Experiments and numerical simulations of droplet impacting on solid surface were combined to analyze the droplet＇ s variation process and its spreading and oscillation. A new segment-based dynamic contact angle was proposed and applied in simulation, the simulate results were consistent well with experimental results. The results show that maximum pressure on PMMA surface exists in the line of the gas-liquid-solid three phase boundary.

关 键 词：液滴 有机玻璃 接触角模型 

分 类 号：O359.1[理学—流体力学]